Fuel-feeder.



F. BOGURSBLSKI.

FUEL FEEDER. APPLICATION FILED 11111.14, 1914.

Patented Mar. 16, 1915.

2 SHEETS-SHEET 1.

i F'. E. BOCORSELSKI.

Y FUEL FEEDER. APPLIUATION FILED MAR.14, 1914.

A, Patented Mar. 16, 1915.

2 SHEETS-SHEBT 2.

mlm

UNTED stra N FRANK E. 4130COR'SELS'KI, 'OF lICIF-I'MOND, VIRGINIA.

FUEL-FEEDER.

ToaZZ whom z'tmay concern.'

Beit known that I, FRANK E. BoCoRsEL- I sm, Aa citizen of the United States, and residing at Richmond. in the county of lfIenrico and State of Virginia, have invented certain new and useful Improvements in FuehFeeders, of which the following is a specification.

This invention relates to fuel feeders es- ]ecally adapated for feeding pulverized The primary object of the invention is to provide an improved method and means for thoroughly agitating and mixing'. pulverized fuel with the aid of an air blast, before the fuel is discharged by the blast to the point of consumption. i

In the use of pulverized fuel bythe aid of an air blast, it is important that the fuel be supplied to its point of consumption in a finely-disintegrated state, preferably in a stream or cloud of dust, that will readily yield to the action of the blast to insure a free delivery of the fuel in Ith'e best form for thorough combustion. A

The invention consists -of the method of feeding pulverized vfuel consisting 'in slibjeetingl the same to 'the action of an air blast within a -suitable receptacle Ito thoroughly agitate and disintegrate the fueland subsequently discharging th'e,..fuel -by lthe same air blast. .j

The invention `also includesl the ,method of feeding pulverized fuel consisting' in 'subjecting the .fuel toa thorough agitation within-a .revolving receptacle under the combined .actiono'f centrifugal .force',"and an air blast, and thendischarging "the fuel by fthe same air blast.

The invention also consists. of. al fuel feeder comprising a receptacle provided defledtors so constructed `and so. dis.- posed 'within the receptacle as to cause the fuel, under the 1force of an air blast,` to' bethoroughly.' 'agitated and 'ined aV whirling moi-*ement of the air, before being dsiarged from the receptacle by thesame a Y Another 'feature ofthe invention is to provide a revoluble receptacle provided withiinteinal 'defiectors and an 'air tube, 'so that the 'fuel may be 4agitated both 'by een# trifugal force 'and by -an air blast .simultanous'lv.` I' vje l invention 'also includes improved means for vfeeding the pulverized fuel "t'o the Speei-cationlof Letterslraten't.

receptacle; improved means for directing its course of movement within the receptacle, and finally discharging the fuel from the receptacle by an air blast.

The drawing illustrates one embodiment of my invention, the construction of which will be fully described hereinafter in connection with the drawing which forms a part of this specification, and the novel Patented Mar. 1d, fgl. Applicationledarch 14, 1914. Serial No. 824,760.

features-of 4the invention will be set forth and defined in the appended claims. l In the drawing: Figure 1 1s a vertical central longitudinal section of a fuel feeder yembodving' the invention, in which the mixing receptacle is stationary. Fig. 2- is a transverse section of the same, on the Vline 2 2 of Fig. 1. Fig. 3 is a similar section taken on the line 3--3 of Fig. l. Fig. 4 is a vertical central longitudinal section of a modified embodiment -of the invention in which a revdluble mi2-ring and aegi-tatingreceptacle is employed, and, Fig. 5 is a vertical transverse section of the revoluble receptacle on the line 5-5 of Fig. 4.

Referring to Figs. 1, 2, and 3, the 'nn-- mera-.l 1 designates a spherical receptacle made up of two seetions'Q and 3, 'each lhaving an annular ila-nge 4, said flanges abutting, and bei-ngesecured together by bolts 5. This receptacle 1 is provided with a -suitable support 6 upon which it is secured in anv preferred manner. v

The `reference numeral 7 designates an air tube screw-threaded at one end 'for attachment 'within a threaded openin one side of the receptacle, and having its opposite end 9 flared 'as shown, and co-actin with a 'conical defiector 10 to provide :a d1- verging passage 1.1. The deiector 1'() projects from, and is 'shown as integral with, a conc'avoeonvex -plate .13, which is supported within the section .3 of the receptacle by spaced lugs or webs 14 secured tothe inner face of the Isection 3. The plate 13 is pro-v vided onits 'outer side with a conical deiiec'torl, horizontally alined with the inner conical' .del-lector 10 but of materially less dimensions than the latter. Surroundin the outer ythreaded end 'of the tube-' T ijsf'a hollow conical de'fi'eetor A16 havinganjfah los a conveyor shaft 19, the opposite end ot' said shaftbeing supported in a bearing 20 pro- -jecting from the inner side of the front wall 2l of a hopper E22. The hopper is provided with a tubular extension 25 within which revolves a portion of the conveyor shaft lll and its feed screw QG. The. outer end of the conveyor shaft 19 extends through a bracket bearing Q7 secured to the hopper, and a belt pulleyv 28 is mounted upon the outer end of the shaft 19 whereby the feed convever may be revolved Ifrom an)v suitable source of power.

The extension of the hopper communicates through an opening f with a feed chamber 3G communicating at its inner side. as at 31, with the air tube i', and at its outer side With an air pipe 3l ali'netl with and constituting;r a coiitinuation ot' said tube.

The feed chamber 30 is preferablyY ot' approxiriateliY oral forni in cross-section as shown in l? Q, and. is 'provided with a verticallysdisiiosed flange fitting upon a eomplen'ientary flange on the boss l? to which it is secured. lVithin the lfeed chainber osed a plurality oit oppositelvinclined baille-plates 3 disposed above the lower end 35i ot said feed chamber, as best shown in. Fig. to obstruct and retard the feed ot the pulverized 'fuel as it ialls through the feed chamber to the lower portion thereof, said portion 35 being interposed between the contiguous ends of the blast pipe 3i, and the air tube 7 and con'-` stituting a part oi the path of travel oi the blast.

The operation of 'the feeder may be eX plained as :follows: Pulverized fuel from the hopper falls upon the convever screw and is fed to the mouth of the feed chamber 30 through which it falls over the baille plates until it reaches the bottom portion 35 of the feed chamber, Where the air blast entering through the pipe 3l carries the fuel through the tube 7. As the fuel is dis-i charged b v the air pressure. through the flared end 9 of the tube, it encounters the conical deiector 1.0 and is deflected through the diverged 'passage 11 against the concave face of the plate 18 which directs it down and whirls it around within the receptacle l, to thoroughly'agitate and disintegrate the fuel, and finally force it in a thin stream within the space between the convex face of the plate 13 and the inner face ol the section 3 otitlie receptacle as indicated by arrows in Fig. and finally discharges it through a central opening 36 in the section 3 opposite the dellector i5, and communi* eating; with. a discharge pipe Si secured. lo the section 3, which directs the fuel to the point ot consumption. The. function of' the bollen' conical defi ctor 16 to deflect 'ttl and the whirling fuel 'toward the plate operate with the deiieetor $5 in d" l Matese pulverized fuel, after it is thoroughly agitated and mixed with the air under pressure, out of the receptacle.

lt will be understood that the strong pressure ot the air blast alone all'ects the Whirling movement of the fuel., in the form of Feeder shown in Figs. l, Q, -and 3.

To 'supplement the force of the air blast, by imparting a rotary motion to the mixing receptacle, is the object of the niodied construction illustrated in Figs. 4 and 5 of the drawings, and reference will .new be made to said figures. The revoluble receptacle comprises tiro semi-spherical sections 38 and 39 supported to revolife between the arms l0 and 4l of a U-shaped yoke 42, having a stand or base 43. The arms are provided with alined bearings ,44; and 45 to receive tubular trunnions 4G and 4-7 projecting centralhv from the outer sides of the sections 38 and 3!) of the mixing receptacle, respectivelj.: Upon the trunnions 46 of the section 25S is mounted a spur gear Wheel 48 meshing with a gear pinion 49 mounted upon one end of a` driveshaft 50 supported at one'end in a bearing 5i of the yoke -Q, and adjacent tofits opposite end in a suitable bearing at a. distance from the receptacle. 'The shaft 50 may be driven either by a suitable inotor (not shown) or by means of a belt pulley 53 mounted on the hatt, the latter beingshou'n broken away in li`igg. al, to illustrate that eitlier inode of driving referred to may' be selected. rThe reroluble receptacle is provided with an air tube 7, dellectors 10, 15a, and 15b, a concesso-couver: plate 13a corresponding to and in all essentials saine as the same elements shown in Fig. i. The hopper 22a, air blast pipe 31a, feed chamber .303, and their associated elements are likewise similar to those already described in connection with Figs. 1, 2, and 3, and need no further description. The operation of this modified forni will be readily understood, it being onlyv stated that the revolution of the shaft 50 revolves the spherical mixer through the gears 4:8 and 49- and the revolution of the receptacle supplements the air blast in effectingthe required mixing and agitation, the fuel being subjected to the centrifugal force of the revolution ol the receptacle, as well as to the act-ion of the air blast.

The whirling course of the pulverized Jfuel is indicated by arrows in Figs. l and 5,

and it is obvious that the fuel will be subjeeted to a thorough agitation and disintegration in its travel through the feeder and linally discharged in a thin stream or cloud so necessariY to insure complete combustion.

il'hile the forms of the invention herein shown and described are what are believed to be preferable embodiments thereof, it is nevertheless to be understood that various orins and modifications-may be had Withlas v meines out departing from the spirit and scope of the invention asclaimed.

What claim as new and desire to secure by Letters Patent of tbe United States is 1. A feeder for pulverized fuel, comprising a receptacle, an air tube diametricallydisposed therein, an air blast pipe communicating with one end of said tube, means Within the receptacle for obstructing tbe fuel, and means for revolving said receptacle to disintegrate the fuel by centrifugal motion While it is being carried by the air blast for discharge by' said blast centrally of said receptacle. j

2. A fuel feeder comprising a circular receptacle, provided With internal oppositely disposed confronting deiectors, an air tube extending through 'the receptacle and flared at its discharge end, and means for feeding pulverized fuel to said receptacle.

3. feeder for pulverized fuel, comprising a receptacle provided interiorly With diametrically opposite deilectors, an airtube disposed Within said receptacle in alinement with said deflectors, an air blast pipe communicating with one end of said tube, and means for supplying fuel to a point between the air blast pipe and the air tube.

4. A fuel feeder comprising a mixing'receptacle, means for directing an air blast therein, and means Within the receptacle t0 cause pulverized fuel to be agitated and follow a circuitous path in its travel toward the discharge opening of the receptacle, said means consisting of a concavO-convex plate ceive an air blast, and means within the receptaele for agitating and mixing the fuel under the action of the blast, comprising a concavo-convex plate, at one side of the receptacle and oppositely disposed delectors at diametrically opposite sides of the receptacle.

6. A fuel feeder comprising a mixing receptacle, an air tube disposed diametrieally Within the receptacle, and adapted to receive an air blast, and means Within the receptacle for agitating and mixing the fuel under the action of the blast, comprising a concavo-convex vplate provided with oppositely projecting conical deflectors.

'7. A fuel feeder comprising a receptacle provided With confronting deiectors arranged Within the receptacle, an air tube extending through the receptacle, an air blast pipe alined with said tube, means within the receptacle for directing the fuel in opposite directions around the inner surface ofthe receptacle in its course toward the discharge opening of the receptacle.V

ln testimony whereof l affix my signature in presence of two Witnesses.

FRANK E. BUCRSELSKI. fWitnesses CHARLES, D. ARMSTRONG, F. R. STEVENs. 

